Sash-cord guide



UNITED STATES PATENTkr OFFICE.

WILLIAM H. H. KESLER, OF BALTIMORE,-MARYLAND.

sAsH-CQRD GUlDE.

SPECIFICATION forming part of Letters Patent No. 233,254, dated October 12,5l880. Application filed May 27, 1880. (No model.)

To all whom 'it may concern:

Beit known that I, WILLIAM H. H. KEsLER, of' Baltimore city, State of Maryland, have invented certain new and useful Improvements in Sash-Cord Gruides;` and I hereby declare the same to be fully, clearly, andeXa-ctly described as follows, reference being had to the accompanying drawings, in which- Figures l and 2 are, respectively, front and side elevations of the device, and Fig. 3 is a central section al view ofthe window-frame and mortising-bit, showing the mode of making the mortise for the insertion of the sash-cord guide.

My invention relates to that class of devices known as sash-pulleys77 or sash-cord guides, consisting, essentially, of a casin g in which is mounted a sheave for 'the reception of the cord that sustains the sash.

The object of my invention is to furnish a device of this -class so constructed as to dispense entirely with screws or other separate fastening devices, while incidentally affording greatly-increased facility for inserting the sash-cord guide in its mortise, the latter being formed by a single cut of a spurred and laterally-cutting bit.

In the accompanying drawings, A is the casing, in which is mounted, on a suitable pivot-pin, the usual sheave B. rIhe lower edge, C, of the casing is rounded from side to side, as shown, and meets the upper or rear face at a right angle. On the sides of the casing, and at right angles to the lower face or edge, G, are formed flanges or ribs D D.

In Fig. 3 of the drawings E is the windowframe, and H is a laterally-cutting bit having cutting-spurs .I I.

To form the mortise for the sash-cord guide, the bit is made to approach the window-frame, or vice versa, at an angle equal to that at which the upper or rear edge of the casing A meets the front face, and to traverse a distance accurately equal to the length of the said rear edge, when it is withdrawn in the same path by which it entered. A mortise is thereby formed having a rounded base, G, and grooves F F. The spurs I I upon the bit H are of such size as to form these grooves of accurately the cross-section of the flanges D D', and the body of the bit is of exactly the same width as4 the face of the casing A.

It is evident that the mortise thus formed is adapted to receive and retain the described casing, which is simply slid into the mortse in the direction in which the bit was made to enter it, until the rounded base of the casing brings up against the rounded base, G, of the lnortise, when the face of the casing will be flush with the face of the window-frame.

From the foregoing description of the device andthe mode :of inserting it it will be readily understood that my invention is not limited to the precise con tour of casing sh own, although the same is believed to be the best.

Keeping in view the ends which Idesired to accomplish-viz., to dispense with a separate securing device and to adapt the casing for insertion in a niortise formed by a single cutcertain modifications of my invention at once suggest themselves. A single liange, D, on either side, may be substituted for the pair shown, or more may be added, and the flange or anges need not of necessity be continued clear across the sides of the casing.

Again, the anges may be curved in the arc of a circle upon the sides of the casing, adapting the device for insertion in a Inortise formed by a circular motion of the bit H. When but a single bead or flange on each side of the casing is used it is made to cross the center of the casing and receive the pivot-pin of the sheave.

I do not claim, broadly, a sash-cord guide consisting of a pulley-frame one of the cheeks of which is provided with an elongated lug adapted to an inclined groove in one side of the mortise in the window-frame.

What I claim isl. A sash-cord guide having lateral anges upon its casing extending downwardly and rearwardly, as set forth, the device being adapted for insertion into a mortise formed by a laterally-cutting spurred bit, whereby the necessity for a screw or other separate securing device is obviated.

2. A sashcord guide having lateral anges extending downwardly and rearwardly upon its casing, and having a rounded lower edge, as and for the purpose set forth.

WM. H. H. KESLER.

Witnesses:

R. D. WILLIAMS, JOHN C. GITTINGER. 

